A surface low pressure system, with a warm front extending to the east, moved from west to east across Wisconsin during the evening.  The surface system combined with an unseasonably strong upper level disturbance and a very unstable atmosphere to produce thunderstorms.  Five tornadoes developed from these storms in east central Wisconsin.  Each tornado fell into the "weak" category and was on the ground for less than ten minutes.The first tornado in the area touched down southwest of Wautoma (Waushara co.), snapping off and uprooting numerous trees, and causing damage to a few buildings and some farm equipment before dissipating.  A tree fell onto a large pole building, causing major damage to one of its sides, and the porch at a residence was destroyed by a fallen tree limb.  A portion of the metal roof of a barn was torn from it and thrown about 200 feet, an irrigation system was damaged and a home suffered minor shingle damage.The second tornado touched down southwest of New London (Waupaca co.), snapping off large trees and damaging a few buildings along its path.  It shifted a large barn, destroyed a small metal shed and threw it about a quarter mile, and overturned an outbuilding and threw it 30 to 40 feet into a stand of trees.The third tornado touched down west of Neenah (Winnebago co.), downing trees, stripping some siding from a home and destroying a corn crib before dissipating.The fourth tornado touched down northeast of Wrightstown (Brown co.) and downed or snapped about 75 trees and damaged or destroyed several structures along its path.  Two wooden garages were destroyed and debris scattered for several hundred feet.  The walls of a house that was under construction were blown down, part of the steel roof of a commercial building was pulled from it, and a heavy wooden bench was picked up from the front porch of a house and thrown several hundred feet away behind the house.The last of the tornadoes touched down southwest of Manitowoc (Manitowoc co.) and caused considerable damage to a farm and snapped or uprooted about 50 large trees before it dissipated.  Several hay wagons and trailers were overturned.  A concrete silo was destroyed and another damaged, and the roof of a barn sustained extensive damage.  Parts of the barn and silo were found in trees a third of a mile away.The tornadoes were part of a record tornado outbreak in Wisconsin.The storms also produced torrential rains that caused some minor street flooding in parts of Brown, Outagamie and Manitowoc counties.

Tornado in WINNEBAGO, WISCONSIN
From 18-AUG-05 18:40:00 to 18-AUG-05 18:48:00 (CST)
Location: NEENAH
Tornado F-scale: F0
Property damage: 1K
Reported by: EMERGENCY MANAGER

Tornado in BROWN, WISCONSIN
From 18-AUG-05 19:45:00 to 18-AUG-05 19:49:00 (CST)
Location: WRIGHTSTOWN
Tornado F-scale: F1
Property damage: 10K
Reported by: LAW ENFORCEMENT

Tornado in MANITOWOC, WISCONSIN
From 18-AUG-05 20:35:00 to 18-AUG-05 20:39:00 (CST)
Location: MANITOWOC
Tornado F-scale: F1
Property damage: 15K
Reported by: NWS STORM SURVEY

Tornado in WAUSHARA, WISCONSIN
From 18-AUG-05 17:32:00 to 18-AUG-05 17:36:00 (CST)
Location: WAUTOMA
Tornado F-scale: F0
Property damage: 5K
Reported by: LAW ENFORCEMENT

Tornado in WAUPACA, WISCONSIN
From 18-AUG-05 18:38:00 to 18-AUG-05 18:41:00 (CST)
Location: NEW LONDON
Tornado F-scale: F0
Property damage: 1K
Reported by: FIRE DEPT/RESCUE SQUAD